WorksheetsTimbers- physical characteristics, working properties, footprint
Total questions: 18
Worksheet time: 9mins
A knot is a physical characteristic typically found in what type of timber?
Hardwoods
Softwoods
Manufactured boards
Which timber would be the heaviest and most dense?
Oak
Pine
Jelutong
Balsa
Softwoods have cells that grow upwards. These are called ...
triads
tracheas
tracheids
tractors
This picture shows a bottom of a tree after it has been cut. The darker lines represent the what?
Old branches
Insect damage
Stresses of being cut
Growth rings
Grain in timber can be defined as ...
fibres running the length of a tree trunk, giving strength to the tree but also providing the distinct pattern and colour to timber boards.
fibres that run across the width of a tree trunk, giving cross-sectional strength and providing the distinct shape of timber boards.
Elasticity in timber can be defined as ...
the ability to bend far
the ability to bend and return to shape
the ability to withstand bending
the ability to withstand large forces
Tensile strength in timber can be defined as ...
the ability to withstand being stretched.
the ability to withstand being hit.
the ability to withstand being squashed.
the ability to withstand being scratched.
Compressive strength in timber can be defined as ...
the ability to withstand being stretched.
the ability to withstand being hit.
the ability to withstand being squashed.
the ability to withstand being scratched.
A Social Footprint is the effect of a product on the people and the society that manufacture and use the product.
Trend forecasting is when designers and manufacturers try to guess what will be fashionable next. True or False?
True
False
A Social Footprint is the effect of a product on the people and the society that manufacture and use the product.
What are some of the impacts of logging on communities?
displacement from homes, new wildlife habitats, job creation.
displacement from homes, loss of wildlife habitats, reduction of farm land.
displacement from homes, job creation, extinction of rare wildilfe.
displacement from homes, river pollution, new hotels.
Timber can be recycled. True or False?
True
False
Upcycling is when a product intended for one purpose is used for a seemingly more important, long lasting purpose. Which of the following is an example of upcycling timber?
Burning timber as biomass to create energy.
Using timber scraps from house building to make chipboard.
Creating landfill to break down and produce methane for energy production.
Using an old timber pallet to make a bench seat.
Sustainability in the timber industry is a long term investment. Why?
Because it takes yeard for the manufacturers to pay you.
Because it take years for trees to grow.
Because sustainability relies on trends which come around rarely.
Because timber is an environmentally unstable material.
Why do most timber plantations grow softwoods and not hardwoods?
Hardwoods take longer to cut down.
Hardwoods are more expensive to plant.
Hardwoods take longer to grow.
Hardwoods are more resilient to pests.
What is meant by "Processing" of timbers?
When trees are cut down, cut into smaller lengths, cut into boards then dried out.
When timber is cut into smaller boards and then planed all round (PAR).
When timber is made from using the mulch and smaller pieces of timber and pressed into boards.
When timber is cut from a tree and the leaves are left to decompose to help the next tree grow.
Why are trees, and therefore timber plantations, important to the environment?
Trees help to soak up atmospheric pollutants, like methane.
Trees help to soak up the rain.
Trees help to soak up carbon dioxide.
Trees help to soak up atmospheric gases, like oxygen.
How does the timber industry help to contribute to global warming?
Through the growing of trees.
Because of the effect of the leaves reflecting sunlight.
The timber industry cuts down endangered trees and habitats.
When timber is cut using machinery and transported it adds carbon dioxide.
When timber is processed it is often kiln dried, not left to dry in the air. What is the advantage to the timber company when the kiln uses lots of energy?
The timber doesn't rot in the air.
The timber dries faster to give larger profits.
The timber dries faster to give more time to grow more trees.
The timber is attacked by insects.
